A friend asked about it. I have an old manual lens, which he wants to use on his (at present) Canon 300D. He has a T2 adapter that fits the EOS body. The body has electrical contacts and the T2 mount has just painted metal. I said he'd need to use manual mode as the Auto modes would not work. Before rendering his camera useless, I said I'd find out if it would even work at all.
Is this right? And what else should he consider? Thanks, and here's a pic of the back of the lens+T2 mount.